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为研究扫频波对连续波Doppler引信的效应规律及作用机理,开展了典型引信扫频波辐照效应试验,结合现有文献研究结论,提出了普适的扫频波辐照下连续波Doppler引信效应规律及作用机理。试验结果表明:扫频波辐照下引信会意外发火,引信临界干扰电场强度与扫频频段有关;扫频步长、频点驻留时间与引信是否意外发火密切相关,受试引信意外发火时要求扫频步长≥7 k Hz,频点驻留时间≤483 ms;扫频参数不会影响受试引信临界干扰电场强度。扫频波辐照下连续波Doppler引信意外发火原因为:扫频波频率变化导致引信自差机振荡状态发生跳变,引起高频电路输出电压波动,从而推动执行级误动作。
In order to study the effect regularity and mechanism of sweep wave on continuous wave Doppler fuze, a typical fuze swept frequency radiation effect experiment was carried out. Combined with the existing literature research conclusions, a universal wave Doppler Fuze law and mechanism of action. The test results show that the fuze will be accidentally ignited when the sweep signal is irradiated, and the critical disturbing electric field intensity of the fuze is related to the sweep frequency band. The swept frequency step and frequency dwell time are closely related to whether the fuze is accidentally ignited. It is required that the sweep frequency should be ≥7 k Hz and the dwell time should be ≤483 ms. The sweep parameters will not affect the field strength of the critical disturbed fuze. Sweep frequency wave irradiation continuous wave Doppler fuze accidental ignition reason: Sweep frequency changes lead to fuze oscillation state of the hopping occurs, causing high-frequency circuit output voltage fluctuations, thus promoting the implementation of the level of malfunction.